I guess it depends how you were "brought up". When I was learning Internetting on the newsgroups, before there were many web forums, it was considered bad manners to waste bandwidth and people's time by posting messages with no real content like "Thanks Dennis thanks Fred, thanks....". Almost as bad as posting "me too"

.
I still have the habit of not replying unless I can add something. Sorry if it appears rude to you

. Of course if you can post something like "That 3rd suggestion Fred made was the one that fixed my problem, thanks" that might be better but then everyone who wasn't Fred would feel slighted. Tricky call

.
Steve