HitLeap

Freee version is ok, if you are looking for random traffic, at the end of the day if you want social and google ranking attention you have to pay, if you are a campny / service 36 GBP a month is nothing compared to possible customers, even if you pay 36 GBP and you get 5 customers for 1000+ impressions / " hits ", each customer pays 90+ GBP well, you have it right there MONEY. Money is not free, to get it money you have to spend money, and with this service you simply have to do that. I would not reccomend the free service as you cant pick traffic location.

Pro (paid)
Traffic location
Enabled bounce rate reduction
Social traffic
Key word associated traffic ( google, etc)
Referrals
Direct Links

Cons
Its not perfect, I would never recommend on a long term as you cannot fully control the bounce rate and regardless its limited to 60 seconds which can screw up your analytic results.

Its good for a starting buisness who

People get desperate when they run after money
And those who surf on the internet for 24 hr days to get rich quickly by making youtube channel or making website or blog, affiliater or even links publishers they seek for one thing in advance is more traffic more views or more clicks.
In this high competition market ( traffic driving) many website claim to drive high traffic for your channel, pages, blogs, websites, affiliate links, but you must be aware, they are said they are not bot, I mean like program doing automatic clicks on specific pages or link, or group of community get together to circulate clicking in website that submitted on their site, but most of them are just bot.
Hitleap is website or program that have a free account and two paid account, the free account is absloutely bot, and they said in paid account you will not get clicks from the same location or same IPs, but if you in any shrinking website you will be banned quickly, and I mean this website ( paid shrinking websites) have high proceeder to detect bots or traffic exchanger program, and most of paying website are looking on the quality of traffic not the number, and even the affiliater need for conversion or commission for deals they do, because those kind of website ( like hitleap) will not get you any conversion so commission, and shrinking website will not accept the bad quality of traffic, I mean the most better quality is the fresh viewer from kanada or USA.
If you seeking to high ranking for your website or any more views to prove how popular your work is, ok they will help you a lot.
So for my advice, read more review before you decide to but your money in any adnetwork, Nd look for the quality of the traffic not the number.
Because you will loose the most precious thing, and I did'nt mean the money, I mean the time you wasted in this unmarcey race.