Advantage of E-Marketing :
(i) Any Time market: E - Marketing provides 24 hours and 7 days "24/7" service to its users. So consumer can shop or order the product anytime from anywhere.
(ii) Direct contact of end consumer by the manufacturers cuts down the substantially intermediation cost. Thus products bought through e-marketing become cheaper.
(iii) Customer can buy whatever they want/ need just by browsing the various sites.
Disadvantages of E-Marketing :
(i) E-Marketing a strong Online advertising campaign need for which company have to spend large amount for website design, software, hardware, maintenance of business site, Online distribution costs.
(ii) It is not suitable for small size business and also deters customers from buying who lives on long distances.
(iii) While the number of customers is continuously growing, companies hardly update the information on website.
(iv) Many buyers are suspicious about the security of the Internet. As a result, many visitors of business web sites do not like to use their credit card to make a purchase. So, there is a fear of their cards being misused by fraudulent practitioners.

Guerrilla Marketing : 
(i) The concept of Guerrilla Marketing was invented as an unconventional system ofpromotions that relies on time, energy and
imagination rather than a big marketing budget.
(ii) Guerrilla marketing represents advertisement strategy to promote products/ services on streets or other
public places with monkey like shopping malls, parks beach etc.,
(iii) It is suited to small companies which cannot set apart big advertisement budget.
Multilevel Marketing
(i) Multilevel Marketing is the marketing strategy wherein the direct sales companies encourage its existing distributors to recruit new distributors to facilitate the sale of goods and services.
(ii) The distributor is compensated not only for the sales generated by him but also gets a percentage on sales revenue of the other distributor he recruits, thus; a multilevel marketing is a type of direct selling wherein the distributor sells the product via relationship referrals and word-of-mouth marketing.