I'm looking to start sports betting but I'm unsure of which online Sportsbook is the best. Can anyone give me some suggestions?

The best online Sportsbook is easily Bookmaker.com. They are the best backed Sportsbook on the internet, and always are the first to post their lines. I've never had a problem withdrawing from them, and there are many safe methods of deposit.

http://www.bookmaker.com/?cmpid=12863

Intertops which can be found here http://affiliate.intertops.com/processing/clickthrgh.asp?btag=a_1877b_168 is the best.

They were the first ever online sportsbook, they are safe, secure and reliable and right now they have a free NFL pool competition going on where you can win $100 for free.

Just click here http://affiliate.intertops.com/processing/clickthrgh.asp?btag=a_1877b_168 then click sportsbook, then special offers and you should see it if you want to enter.

They also have lots of great promotions besides that going on.

I hope that helps and good luck :)

have a look here for a full list of online bookmakers. My choice would be William Hill if you're outside the US but if you're in the US then sportsbook.com is a good option.

http://www.dashelc.com/online-bookmakers.html

Betsocial.com ,Bet365.com, capperpicks.com are the top most sports betting sites. Try them.
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You can find reviews of the best online sportsbooks here http://www.gamblingsafe.net/online-bookmaker-reviews.html
at Gambling Safe, the site that lists safe and reliable gambling sites.
I like mostly bwin and bet365, betfair, interwetten, that are the best sites for play.