I can do a search on the app and find almost any game I'm looking for very quickly and then either buy it or mark it to watch. This does not seem to work at all as well on the website. Most searches either bring back nothing or just articles where the game is mentioned. I guess the search isn't even as big of a deal for me as having the ability to mark any game mentioned in the forums as a game I want to watch without dragging my iPad out every time. Or am I doing something wrong?
On the yellow toolbar with search in upper right, make sure you click "Forums" first to pull up a search on the forum and not the webpage (if you start searching from the front page, it'll only pull up front page articles). There's a minor formatting problem where selecting Forums in the toolbar overlaps and cuts off the first part of the search (in Firefox, at least). I use the "Search" option in the gray toolbar that you have to click to bring up a drag down menu. The forum search engine has some limitations; when I'm looking for a specific game if forum search fails, search Google for "[App Name], Touch Arcade." I've only ever used the web browser edition of Touch Arcade and never had many difficulties with search function.