Is it possible and adviceable to have two different types of scripts, say a word cloud script on one domain/server? Can there possibly be conflicts?
No, should be no problem at all. If either or both scripts need a database, just set up a separate database for each in mysql. Lots of sites are running dozens of scripts. Now, say you want a word cloud script attached to a blog. Just set up a folder for the word cloud and there you be.
There should be no problem running as many scripts as you like in one server and even on one domain if you properly manage the SQL database and give according access to each script that needs it, etc. Regards