I've started to use Evernote again.
At work I use it to keep "todo" lists, meeting notes, questions/ideas, things I want to remember for my next meeting with person X. It's quickly replacing a million PostIt notes and various notebooks full of illegible "notes".
I haven't gotten much use out of it at home yet. I like the toolbar item that allows me to create a Note easily, including a selective or full screen shot (would partially solve your Photobucket issue). If I want to capture an image, all I have to do is drag it from Chrome into Evernote. A new note is created, and I can add annotations, etc.
There are lots and lots of strategies for using Evernote, but the one I'm concentrating on first is to simply capture everything into one "Inbox" style notebook. Pausing to capture everything is the hard part. Later, when I have downtime, I can go through and sort notes into different notebooks and consolidate. Or not, the search feature is pretty great.
Renaming files sucks and searching using Finder (or Explorer) can be hit or miss. For your use, I can see dragging an image over to Evernote, dropping it in, and annotating the note that is created, using the sort of natural-language text that later searches will pull up. Drop in the URL too while you're at it.
