Sometimes I use the search function to look for a thread on a particular topic. Lots of interesting threads often appear but when I click on what looks like the best ones (judging from the title and the first few lines) I would say a good 30-40% have been deleted! Sometimes there's an explanation such as a troll or PBP but often it's just left blank. Do people just randomly delete stuff after it's been there a year or two? Also, if a thread has been deleted then surely the whole thing should go including the title and first few lines of posts too. Otherwise, it's like being led up the garden path so to speak thinking you've found the perfect thread to get good advice etc only to find it doesn't exist anymore!