Well, ignorance is NOT bliss, and two weeks ago I got the notice that my Picasa Web Albums file was nearly full (and I have been blogging only a few months, not for years like Vee!). So, if you too have been blogging "unawares" here is what I have learned so far (don't laugh even though most of you already know all this).
Blogger keeps all of your uploaded photos on a Picasa Web Album, whether you knew it or not. You get to it by having your gmail account opened and going to picasaweb.google.com. There you will see your photos, and at the bottom of the screen it will tell you how much space you have left (you are allowed 1Mb of free space with your blog). BTW, your photos are not really THERE, they are still wherever you left them, so if you delete them from your original file they will also be deleted from your blog!
I have been doing two things wrong. First of all, I uploaded photos willy-nilly to the blog because I like to look at them on the preview before I decide what I will actually publish: the idea being it is easier to take away photos I don't want than to go back and look for more photos to add. This would have been fine IF I had gone into my Picasa Web Album and DELETED the ones I didn't use, but I never did this because I never even went to my Picasa Web Album at all. So if you are committing this error, get into your Picasa Web Album and delete those unused photos -- they are wasting valuable space -- even though they are not really there (confused yet?).
The second error I made was uploading directly from iPhoto without resizing. I click the photo icon when writing my post, go to "choose files" at the top, and then enter my iPhoto Library and choose the photos I wanted to upload. Easy. BUT when I do this there is no option for resizing the photo, and my photos were uploading often around 4,000 x 3500 (resolution -- is that the right word?). Apparently a good choice for blog/web photo size is around 800 (-- resolution?) and medium quality -- a big, big difference.
I am not opposed to purchasing extra space from picasa, but the price has gone up ($36/year for 25 GB), and I really don't NEED the extra space yet if my photos were a more realistic size. Easy fix, right? I simply need to resize my photos. But HOW TO DO THIS?
I am hoping there are some straightforward answers, but the search for them has been anything but. Pretty much any information prior to summer 2012 is obsolete. Part of the problem is with iPhoto and part is with picasa/blogger. As far as I can find out, you can only resize photos in iPhoto if you are exporting them. That's not so bad, as I do want to export them to my Picasa Web Album, but I cannot find out how to do this. There was a simple plug-in for this that you downloaded from Google, but Google has now done away with this. Now they want you to download Picasa 3.9 for Mac, but I'm not sure I want to do that. That seems unnecessarily complicated.
Picasa could make this whole problem a lot easier if they had a setting that you could choose that would automatically resize your photos. They actually do have this setting -- it's just that they decide when to use it, not you.
So, I have a lot of questions. Googling for information on this issue has not really gotten me anywhere. I think I am going to have to break down and go take an iPhoto class from the apple store, but that's kind of a pain because it's an hour or more away. If you have any answers or corrections, please send them my way. Right now I will be spending less time on blogging and more time on learning how to use my computer, which, even though I do it reluctantly, might not be such a bad thing;) I didn't realize that this fall was going to be back to (computer) school for me!