Alexa and Google PR both are useful to know credibility of a site IMO...nothing more nothing less..period.
Alexa has a few stats, but since it is based on the toolbar I wouldn't consider it a solid or accurate resource. I take a peek at it once in a while, but don't spend much time with it. A lot of people have never even heard of alexa.
i wonder too! google and alexa show me different keywords search that end up on my site. i m confuse.
Alexa has its importance when there is no other scale which has a closer proximity to the real traffic. However we webmasters know that its is not that accurate a measure many advertising network do trust alexa ranks to approve the sites. Also alexa traffic is still used while selling or buying a website.
isnt that ironic? since we do not trust Alexa and yet we buy and sell using Alexa as a reference. I think alexa is use to satisfy our emotion when making decision rather than a intellectual info to making decision.
I don't preferred alexa much more. but it's doesn't Give you the perfect traffic Results. you can improved your alexa ranked by your self with downloading the Alexa tool Bar on your PC and if your all visitors has the Alexa with their PC or system it's (Alexa) boost Automatically. the other way is Get friends to review and rate your Alexa website profile. Not entirely sure of its impact on rankings but it might help in some way.
Alexa is pretty useful tool if you know how to use, it will help you determinated website traffic and many more stuff. It is true that it shows high alexa rank for low traffic website, but why it is happens? First you need to find out website niche, more closer to webmaster related the better alexa rank will get( as you know webmaster have installed alexa more often then regular internet user ), second you need to know where from traffic comes, you can do it by looking with alexa tool, for example if website is pure webmaster related and has ~30,000alexa rank, and most user are from India 50-60%, than you can say website gets about 1000-2000 unique visitors, if most user are from India 10-20% 4000-10000 uv. Another example if website isn't webmaster related( for example entertaiment ) and has ~100,000alexa rank, and most user are from Unted States 50-60% and India 0-10% you can say website gets about 2000-6000 uv. These are just examples. So if you give thought to this tool it can become real thing!
Well their are many software which are available for free and paid . which can boost your Alexa rank in minutes . so i hardly visit Alexa . its a waste of time .
In alexa you can check where traffic comes from( websites: Upstream Sites, Downstream Sites ) you just need to use full potential of alexa and you can easy determinated... You also need to look how alexa changed pasted if it jumped for only several days high. Well as i mention if you know how to use, you can easily make real thing from alexa, it is just if you will be able to give to it good thought.