To create and maintain more than one website online can be a challenging task to say the least, especially if all of your websites are hosted on different hosting accounts. Keeping your sites separate for organizational purposes may prove to be beneficial for some users; however for most it would simply prove to be a hassle. Nonetheless, the final decision should depend upon the needs of your websites and how large the websites are. If you own several small websites then a multiple domain hosting account would be right for you. However if you own a lot of large website then you may want ton consider having a separate hosting account for each web site.
Another important factor to consider is the niche that your multiple domain hosting is in. If for example you have five domains that are all linking to each other and they are into he same niche, then you wouldn’t want these domains to be on the same server unless you had a dedicated IP address for each domain. At the cost of a new IP address for each domain, it may be easier and more affordable to simply purchase a new cheap web hosting account for each domain, or to purchase an SEO hosting account instead which would give you access to several C class IP addresses. On the other hand if the sites are in unrelated niches, or do not link to each other, then having them on one server is not a problem as long as they are not demanding on server resources.
The answer to this question really depends on the size of your websites, what niche they are in and how much you want to push your web server. Most multiple domain web hosting guide accounts will allow you to host as many domains as you’d like. However you should keep in mind that the more domains you host on one web server, the more the performance of that web server is going to be impacted. In the end you should find a solution that works for you situation and would give you the best web hosting awards that you like to have in your own web hosting.