Hi i got to querys (1) How to identify whether a site am seeing is a site or blog. (2) How to differentiate between wordpress blog and blogspot blog. Many wordpress blog has a line at the bottom made by wordpress but several of them dont have it.
Look at the page source code, or page info option within your browser. In Firefox you right click on the page and choose "View Page Source", not sure what it is in IE.
Yes. However, it is not mandatory. it can be changed. Some CMS's will have version info. (which can be removed too) People will always try to hide those footprints to safe guard their blogs from hackers. BTW, why do you need that information ?
To find out bloodspot blog it’s very easy last of domino name will be ".blogspot.com" I'm sorry can’t tell you the trick some time I use to see from page source but many expert hide the think which can't find out from source of the blog