In the list of current users what are the Yahoo, Google and MSN users about and the numbers that follow them in brackets?

They are bots. Lpspider has added them for reasons beknownst only to himself. There is a thread about it in the Lounge called "Bots".

To Quote Daniel
Pretty much nothing. They've always been there (they're search engine bots) but now you can see when their viewing the site. Not much point, i guess.

Hope that helps

Thanks for the clarification. Didn't spot the issue was already being dealt with.