I have uploaded some photos that were taken a while ago on my flickr page. Also discovered that in addition to sets, flickr has collections - quite useful feature for better organization. It seems that flickr has everything to organize the photos: tags, sets and collections
I have uploaded some more photos from the trip to some archaeological places here
I have uploaded some photos from my trip to Troodos mountains in Cyprus in order to get some snow :)
Found yet another search from Google: Google Blog Search. I don’t know for how long it is already available, but I have found it just now and only by accident. Looks fine and is useful to search only in the blogs.
There are more and more things around me where I can use tags for categorizing stuff around and I really like it. Tags a very easy to use and very comfortable afterwards. However I have noticed one problem which I face while setting up tags on different systems: the delimiter for tags in a tag list is different from place to place. For instance in WordPress, tags are separated with commas, while on Flickr spaces are used instead. This makes a problem, because I start using spaces on WP or commas with Flickr and mess up all the tags :(