Broadband 8mb?

What does up to 8mb unlimited broadband mean??
Answer
That is what i got! i pay £5.89 per month for free international phone calls and 8meg unlimited broadband. it means it goes fast! when it goes slow i still get more than bt when it was fast and cost 27 quid! thieves thieves thieves! i paid that for two years! thieves! you can get it here http://www.sleekbytes.com/talk-talk.htm downside (if you can call it that) is you must switch line rental to them ditching off bt. lol, that was the best bit!!