Well, for practical 4 and 5, we basically we taught to learn and use meta search engines such as metacrawler to aid us in our own individual research.From what i have learn form using meta search engines,it have a very significant small amount of hits which is quite different from the usual search engines which have million of hits on each topics.

The thing about meta search engines is that they only display what that the user wants to search for by giving pages that many other search engines have found.So, i found out that the results are quite relevant to what i am searching for, giving me more time to research no other parts.

about the site feeds,it really helps as the user is automatically connected to the webpage and if there is any updates or changes,the person who is site feeding will be notified, which is great for a lazy person like me!

:D

Lastly,regarding the wikis,i find wiking kinda fun as many people are sharing their different views on one common topic. This allows the information to grow bigger or change over time as more users get involved.