The matrimony site you have chosen to lookup for the partner should be able to cater to wide variety of the community needs. For example, for Jain community, it should have the option for Madhya Pradesh Digamber Matrimony and Madhya-Pradesh Jain-shwetambar Matrimonial both. Never judge the site by the way it looks. Some really good looking websites do not have all the options.
Another important factor to keep in mind while making up your mind about someone after reading their profiles is that usually two types of people register on these sites – People who are just playing around or people who really want to get married. Both types of people will have descriptive profiles. This means that you should not have high hopes about someone just by reading their profile.
Another important thing is that before deciding to meet someone, try to find out more about them. Use the social media sites to find their profiles. How they behave on the social media can give you a good idea about their character and personality.